linux-kernel - [PATCH v8 1/6] start vm after reseting it

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Date:	Wed, 08 Aug 2012 10:44:59 +0800
From:	Wen Congyang <wency@...fujitsu.com>
To:	kvm list <kvm@...r.kernel.org>, qemu-devel <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Avi Kivity <avi@...hat.com>,
	"Daniel P. Berrange" <berrange@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Gleb Natapov <gleb@...hat.com>
Subject: [PATCH v8 1/6] start vm after reseting it

The guest should run after reseting it, but it does not run if its
old state is RUN_STATE_INTERNAL_ERROR or RUN_STATE_PAUSED.

We don't set runstate to RUN_STATE_PAUSED when reseting the guest,
so the runstate will be changed from RUN_STATE_INTERNAL_ERROR or
RUN_STATE_PAUSED to RUN_STATE_RUNNING(not RUN_STATE_PAUSED).

Signed-off-by: Wen Congyang <wency@...fujitsu.com>
---
 block.h |    2 ++
 qmp.c   |    2 +-
 vl.c    |    7 ++++---
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/block.h b/block.h
index 650d872..29449bd 100644
--- a/block.h
+++ b/block.h
@@ -338,6 +338,8 @@ void bdrv_disable_copy_on_read(BlockDriverState *bs);
 void bdrv_set_in_use(BlockDriverState *bs, int in_use);
 int bdrv_in_use(BlockDriverState *bs);
 
+void iostatus_bdrv_it(void *opaque, BlockDriverState *bs);
+
 enum BlockAcctType {
     BDRV_ACCT_READ,
     BDRV_ACCT_WRITE,
diff --git a/qmp.c b/qmp.c
index fee9fb2..a111dff 100644
--- a/qmp.c
+++ b/qmp.c
@@ -125,7 +125,7 @@ SpiceInfo *qmp_query_spice(Error **errp)
 };
 #endif
 
-static void iostatus_bdrv_it(void *opaque, BlockDriverState *bs)
+void iostatus_bdrv_it(void *opaque, BlockDriverState *bs)
 {
     bdrv_iostatus_reset(bs);
 }
diff --git a/vl.c b/vl.c
index e71cb30..856e089 100644
--- a/vl.c
+++ b/vl.c
@@ -333,7 +333,7 @@ static const RunStateTransition runstate_transitions_def[] = {
     { RUN_STATE_INMIGRATE, RUN_STATE_RUNNING },
     { RUN_STATE_INMIGRATE, RUN_STATE_PRELAUNCH },
 
-    { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
+    { RUN_STATE_INTERNAL_ERROR, RUN_STATE_RUNNING },
     { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
 
     { RUN_STATE_IO_ERROR, RUN_STATE_RUNNING },
@@ -366,7 +366,7 @@ static const RunStateTransition runstate_transitions_def[] = {
 
     { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
 
-    { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
+    { RUN_STATE_SHUTDOWN, RUN_STATE_RUNNING },
     { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
 
     { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
@@ -1531,7 +1531,8 @@ static bool main_loop_should_exit(void)
         resume_all_vcpus();
         if (runstate_check(RUN_STATE_INTERNAL_ERROR) ||
             runstate_check(RUN_STATE_SHUTDOWN)) {
-            runstate_set(RUN_STATE_PAUSED);
+            bdrv_iterate(iostatus_bdrv_it, NULL);
+            vm_start();
         }
     }
     if (qemu_powerdown_requested()) {
-- 
1.7.1

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